Switch



June 3, 1924. I E. c. MARCILLE SWITCH Filed May 22 I INVENTOR. E. E.MLZTCH. E,

A TTORNEY.

Patented June 3, 1924.

' UNITED STATES EDWARD G. MARCILLE, OF GARDNER, ILLINOIS.

SVVITOH.

Application fiie'd May 22,

T all whom it may concern:

Be it known that I, EDWARD C. MARCILLE, a citizen of the United States, residing at Gardner, in the county of Grundy and State of Illinois have invented new and useful Improvements in Switches; and I do here by declare that the following is a .full, clear, and exact description of the invention, which willenable others skilled in the art to which it appertains to make andv use the same. a

This invention relates to an ignition'control-switch for tractors.

An object of the invention is to furnish a switch for the control of two forms of ignition apparatus for those types of tractors that are furnished with a magneto only.

Another object of the invention is to furnish a switch fitted as .an attachment to the magneto of a certain type of tractor and to so construct said switch that a battery system of ignition may be installed giving a dual ignition system.

At least one type of tractor, now being widely V marketed, 1 depends solely upon a magneto for ignition which is quiteotten diflicult to use as a starting system, the farmer being often delayed for long periods before he can finally get into the field. And because of this I have devised a switch as an attachment to be afiixed to the magneto, preferably as a convenient method of inst-alling and which gives a very rigid and staunch job. But this will appear from the following description aided by the accompanying drawing, wherein- Figure 1 is a plan of the switch of my invention.

Figure 2 is a longitudinal sectional elevation of the same on line 2-2, Figure 1.

Figure 3 is a transverse section of the switch on line 33 Figure 1, and

Figure 4: is a diagram of an ignition cirouit showing the switch of my invention included therein.

1 designates the body of the switch which may be of insulating material or it may be a stamping of metal for the purpose of proper strength.

At one side the body is provided with an opening 2 adapted to admit the part 3, a

' post 4 of which is the usual terminal of a magneto, not shown. The said post t receives a sleeve 5, said sleeve extending through the opposite side of the body receiving upon it an insulating sleeve separat- 1922. Serial No. 562,673.

ing it electrically from said body 1, while a nut 6, threaded upon the sleeve 5, serves to clamp the body firmly to the part 3 and its said post 4.

7 and 8 designate a pair ot spaced posts extending through the body. The manner of their mounting is shown in Figures 2 and 3. Each extends through a pair of insulators 9, one being shown in section in Figure 2, said insulators separating them electrically from the body 1 and from each other, suitable units 10 securing them in position. Spring contact arms 11 are separately mounted on the posts 7 and 8, one extending in the direction of the other, and 1.2 is a strip electrically connecting the post 8 with the sleeve 5, Figure 1.

Mounted in the body 1 is a third post 13 having a switch-arm 14 adapted to swing about it. Fixed relatively to the said arm is an arm 15 within the body adapted to turn upon the said post 13 and to have contact with one or the other of the contact arms 11 described, said switch-arm 14- and arm 15 beinginsulat'ed, of course, from the body by means of insulators 16.

In Figure 4 the connections to the various parts of an ignition circuit are clearly shown, wherein 17 is a battery connected by a wire 17 with the post 7, 18 is a wire connecting the post 13, or rather the arm 15, with a spark coil box 19, the latter in turn being connected by wire 20, in the usual way, with the timer 21 of the engine or motor 22, said coil box being likewise connected with the spark plugs 23 of the latter.

As already stated, the post 4 of the part 3 is the terminal of the magneto, the body 1 being fashioned to rest upon and enclose the same as a very convenient and ready manner of providing for the dual system. That is to say, the provision of the posts 7 and 8 and the contact arm 15 provide for the inclusion of a battery whose current may be carried through the coil box 19 so that either the battery current or magneto current may be utilized. Starting upon a magneto is laborious where hand cranking must be or is resorted to, so that a battery is most desirable in such cases to the end that easy starting is possible.

A circuit may be closed through the battery or coil box, through the contact of the arm 15 with the spring contact arm 11 of the post 7, after which the said arm 15 may be thrown over to the contact arm of the post 8,

thereby closing the circuit through the mag neto and coil box cutting out the battery My invention therefore provides for the inclusion of a battery in the ignition circuit for the motor of a certain type of tractor by furnishing a switch body for application to the terminal of the magneto furnished therewith as the most convenient method of disposal of said switch on such outfits, and such disposal provides for enclosing the connections, preventing short circuits, the whole being thoroughly rugged and capable of rough usage in the field.

In addition to the advantages to be derived from' the structures herein described and shown the parts for changing frombattery to magneto and vice versa are enclosed dust tight within the body 1 so'that clean contacts are always assured where, as is well known, the heavy dust. stirred up in the field is a constant source of annoyance. v I claim:

1. A switch including a body in the form ofa case having an opening in each of two opposite walls, one opposite the other, a part disposed in one of the openings insulated from the body adapted for engagement electrically with a current conducting terminal,

7 a pair of contacts within the body insulated from the latter and from each other, means ,elect-rically"connecting one of the contacts with the said part, and a manually operated contact part within the body insulatedfrom the latter adapted to be carried into engagement electrically with either'of said contacts.

2. A- switch including a hollow casing having in one of its walls an opening and having in its other wall a relatively larger opening opposite the first, a part carried in the smaller of the two openings insulated from the casing, a terminal within the casing from which to conduct current out of the latter, a conductor electrically connecting the terminal with the part, a second terminal within the casing for electrical connection with a piece of apparatus outside the casing, and a manually operable part in cluding an arm to engage one or the other of said terminals.

3. In a switch for, the purposes named, a hollow shell-like body having an opening in each of twoof its opposite walls adapted to.

receive into them the current conducting terminal of a megneto, said terminal closing the openings and thereby closing the body 1 dust-tight, said terminal being insulated from said body, a pair of electrical contacts within the body insulated from one another and from the body, one of them being electrically connected with the said terminal within the body, the other contact having connection with an electric battery, a manually operated current carrying part within the body as part of an electric circuit adapted to be carried into engagement with either of the said contacts whereby said electric circuit is closed through either said magneto or said battery; I

In testimony whereof I affix my signature in presence of two witnesses. EDIVARD C. MARCILLE. Witnesses: g

WM. BURKHARDT, F. M. ALLISON. 

